Engine-stop.



No. 706,952. Patented Aug. l2, I902.

H. JONES.

ENGINE STOP.

(Application filed. Sept. 27, 1901.)

(No Model.) I 2 Sheets-Sheet I.

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WITNESSES IN VE N T05 9. M Hairy Patented Aug. 12, I902.

H. JONES.

ENGINE STOP.

(Application filed Sept. 27, 1901.) (No Model.) 2 Sheets-$haet 2.

o w R 2" g N i N 1 I j m 1 Q H u K II Q Q W Fq H 'fl E IN VE N 70/? 15 670 fame. BY a E g V A TTORNE YS WITNESSES UNITED v STATES PATENT OFFICE.

HENRY JONES, OF WATERTOWN, NEWV YORK.

ENGlNE-STOP.

SPECIFICATION forming part of Letters Patent N0. 706,952, dated August 12 1902 Application filed September 2'7, 1901. Serial Nth 76,791. (No model.)

To all 1072 0117, it perry concern.-

Be it known that I, HENRY JONES, a citizen of the United States, and a resident of \Vatertown, in the county of Jefferson and State of New York, have'invented a new and Improved Engine-Stop, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved engine-stop arranged to immediately and automatically stop the engine in case of an accident, such as the breaking of a governor-belt, the arrangement be ing such that the engine can be shut down or started up without interfering with the stop in any way whatever or the stop interfering with the free handling of the engine by hand.

The invention consists of novel features and parts and combinationsof the same, as will be fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings,v forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a plan view of the improvement as applied. Fig. 2 is a side elevation of the same. Fig. 3 is an enlarged plan view of the improvement with parts in section, and Fig. l is a side elevation of the same.

A small cylinderA is mounted upon a suitable bracket B, attached either directly to the engine 0, on whichthe stop is to be used, or onto a side wall or a ceiling in the building containing the engine. .Into one end of the cylinder leads a pipe D, connected with a suitable source of steam-supply, such as a boiler or a steam-chest O, and in the said pipe D are arranged valves E under the con: trol of the operator and also an automatic shut-off valve F, carrying on its stem a lever F, adapted to be engaged by an arm G, carried on the stem of the governor H, so that in case the belt of the governor breaks and the stem drops the said arm G moves in contact with the lever F and turns the valve F from a normally closed position into an open position to allow the motive agent to pass from the boiler or steam-chest into one end of the cylinder A, it being understood that the valves E are normally open. In the cylinder A is mounted to reciprocate a piston I,

carrying on the outer end of its piston-rod I a pulley J, over which passes a rope, chain, or other flexible connection K, secured at K to the end of the cylinder A and extending under a pulley L and overa pulley L to then Wind on a pulley N, secured to or formed on the stem of a throttle-valve N, governing the admission of the motive agent to the engine.

In case of accident, as previously mentioned, the steam passinginto the cylinderA forces the piston I therein in an outward direction, so that the pulley J exerts a pull on the flexible connection K to rotate the pulley N, and consequently the throttle-valve will move into a closed position, and thereby shut off the motive agent from the engine. In case the device is applied to a condensing-engine it is desirable to break the vacuum, so that the water of condensation is not forced into the cylinder as soon as the throttle-valve N is closed, as previously explained. For the purpose mentioned the lever F on the stem of the valve F is adapted to engage a lever O, engaging an arm P on the stem of an air-valve P, connected with the exhaustpipe Q, so that when the valve F is actuated by the arm G, as previously explained, the lever F imparts a swinging motion to the lever O, which in turn actuates the arm P to open the air-valve P, and thereby break the vaccum to prevent further pumping action at the time the steam is shut off at the throttle-valve end. The lever F may be actuated by hand, if desired, or by means of a cord extending to any part of a mill or factory in whichthe engine is located, so that by pulling the cord in case of an emergency the engine is immediately brought to a full stop without the aid of the engineer in charge of the engine.

Having thus described my invention, I

claim as new and desire to secure by Letters Patent v 1. An engine-stop, comprising a cylinder, a pipe leading to the cylinder from a motiveagent supply, a valve in the said pipe, a piston reciprocating in the said cylinder, a flexible connection between the piston and the throttle-valve, agovernor,and means for opening the said pipe-valve from the governor when the stem thereof drops, as set forth.

2. An engine, comprising a cylinder, a pipe leading to the cylinder from a motive-agent supply, a valve in the said pipe, a piston reciprocating in the said cylinder, a flexible connection between the piston and the throttle-valve, means for opening the said pipevalve in case of an emergency, and a vacuum- ,breaker actuated with the said valve for breaking the vacuum in the condenser-pump to prevent the pump from pumping waterinto the cylinder, as set forth.

3. An engine-stop, comprising a cylinder, a pipe leading to the cylinder froma motiveagent supply, a piston reciprocating in the said cylinder and carrying at the outer end of its piston-rod a pulley, a flexible connection passing over the said pulley and secured at one end to a fixed part, the other end of the flexible connection winding on a pulley attached to the stem of the throttle-valve, a valve in the said supply-pipe, a governor, and means for actuating the said valve from the governor-stem to open the latter and allow steam to pass through the pipe into the said cylinder, as set forth.

4. In an engine, the combination of a cylinder, a pipe leading to the cylinder from the motive-agent supply, a piston in the cylinder, a flexible connection between the piston,- rod and throttle-valve stem, a valve in the Inotive-agent-supply pipe and provided with a lever on its stem, a governor, and an arm on the governor-stem and adapted to engage the lever of the valve-stem as set forth.

5. In an engine, the combination with a cylinder, a pipe leading to the cylinder from the motive-agent supply, a piston in the cylinder, a flexible connection between the piston-rod and the throttle-valve stem, a valve in the motive-agent-supply pipe and provided with a lever on its stem, a governor, and an arm on the governor-stem and adapted to engage the lever of the valve, of an exhaustpipe, an air-valve connected with the exhaust, and a lever operated by the lever of the valve in the supply-pipe and operating the air-valve, as set forth.

6. In an engine, the combination with a cylinder, a piston reciprocating in the cylinder, and a connection between the piston and throttle-valve, for operating the latter from the former, of a pipe leading to the cylinder from the motive-agent supply, a valve in said pipe, means for automatically opening said valve in case of accident, and a vacuumbreaker actuated by the said valve whereby the vacuum will be broken at the time the steam is shut off, as set forth.

7. In an engine, the combination with a cylinder, a piston reciprocating in the cylinder, and a connection between the piston and throttle-valve for operating the latter from the former, of a pipe leading to the cylinder from the motive-agent supply, a valve in said pipe, a governor, means for operating said valve from the governor in case of accident thereto,and a vacuum-brcaker,actuated from the said valve to break the vacuum at the time the valve is opened to admit the fluid agent to the cylinder, as and for the purpose set forth.

In testimony whereof I have signed my name to this specification in the presence of two witnesses.

HENRY JONES.

Witnesses:

BLANCHE OUTTERSON, CHARLES M. MORRISON. 

